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Finding the Fourth Proportional to 277,809.40, 416,714.10 and 90,839.80

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Solution

The fourth proportional to 277,809.40, 416,714.10 and 90,839.80 is: 136,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,809.40 : 416,714.10 = 90,839.80 : x
  2. Step 2: Convert to fraction form
    277,809.40/416,714.10 = 90,839.80/x
  3. Step 3: Cross multiply
    277,809.40x = 416,714.10 × 90,839.80
  4. Step 4: Simplify right side
    277,809.40x = 37,854,225,501.18
  5. Step 5: Solve for x
    x = 37,854,225,501.18/277,809.40
  6. Step 6: Final answer
    x = 136,259.70

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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.