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Finding the Fourth Proportional to 583,279.80, 874,919.70 and 209,254.20

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Solution

The fourth proportional to 583,279.80, 874,919.70 and 209,254.20 is: 313,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,279.80 : 874,919.70 = 209,254.20 : x
  2. Step 2: Convert to fraction form
    583,279.80/874,919.70 = 209,254.20/x
  3. Step 3: Cross multiply
    583,279.80x = 874,919.70 × 209,254.20
  4. Step 4: Simplify right side
    583,279.80x = 183,080,621,887.74
  5. Step 5: Solve for x
    x = 183,080,621,887.74/583,279.80
  6. Step 6: Final answer
    x = 313,881.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.