Home / 287,912,561.40-431,881,132.70-113,073,486.78

Finding the Fourth Proportional to 287,912,561.40, 431,881,132.70 and 113,073,486.78

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Solution

The fourth proportional to 287,912,561.40, 431,881,132.70 and 113,073,486.78 is: 169,615,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,912,561.40 : 431,881,132.70 = 113,073,486.78 : x
  2. Step 2: Convert to fraction form
    287,912,561.40/431,881,132.70 = 113,073,486.78/x
  3. Step 3: Cross multiply
    287,912,561.40x = 431,881,132.70 × 113,073,486.78
  4. Step 4: Simplify right side
    287,912,561.40x = 48,834,305,548,884,872
  5. Step 5: Solve for x
    x = 48,834,305,548,884,872/287,912,561.40
  6. Step 6: Final answer
    x = 169,615,057.13

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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.