Home / 287,912,558.90-431,881,128.95-113,073,484.28

Finding the Fourth Proportional to 287,912,558.90, 431,881,128.95 and 113,073,484.28

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Solution

The fourth proportional to 287,912,558.90, 431,881,128.95 and 113,073,484.28 is: 169,615,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,912,558.90 : 431,881,128.95 = 113,073,484.28 : x
  2. Step 2: Convert to fraction form
    287,912,558.90/431,881,128.95 = 113,073,484.28/x
  3. Step 3: Cross multiply
    287,912,558.90x = 431,881,128.95 × 113,073,484.28
  4. Step 4: Simplify right side
    287,912,558.90x = 48,834,304,042,431,704
  5. Step 5: Solve for x
    x = 48,834,304,042,431,704/287,912,558.90
  6. Step 6: Final answer
    x = 169,615,053.36

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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.