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Finding the Fourth Proportional to 402,077.81, 554,877.05 and 218,324.20

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Solution

The fourth proportional to 402,077.81, 554,877.05 and 218,324.20 is: 301,292.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,077.81 : 554,877.05 = 218,324.20 : x
  2. Step 2: Convert to fraction form
    402,077.81/554,877.05 = 218,324.20/x
  3. Step 3: Cross multiply
    402,077.81x = 554,877.05 × 218,324.20
  4. Step 4: Simplify right side
    402,077.81x = 121,143,088,039.61
  5. Step 5: Solve for x
    x = 121,143,088,039.61/402,077.81
  6. Step 6: Final answer
    x = 301,292.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.