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Finding the Fourth Proportional to 472,703.94, 709,055.55 and 140,279.94

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Solution

The fourth proportional to 472,703.94, 709,055.55 and 140,279.94 is: 210,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,703.94 : 709,055.55 = 140,279.94 : x
  2. Step 2: Convert to fraction form
    472,703.94/709,055.55 = 140,279.94/x
  3. Step 3: Cross multiply
    472,703.94x = 709,055.55 × 140,279.94
  4. Step 4: Simplify right side
    472,703.94x = 99,466,270,010.67
  5. Step 5: Solve for x
    x = 99,466,270,010.67/472,703.94
  6. Step 6: Final answer
    x = 210,419.80

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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.