Home / 387,730.31-581,637.18-163,113.60

Finding the Fourth Proportional to 387,730.31, 581,637.18 and 163,113.60

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Solution

The fourth proportional to 387,730.31, 581,637.18 and 163,113.60 is: 244,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,730.31 : 581,637.18 = 163,113.60 : x
  2. Step 2: Convert to fraction form
    387,730.31/581,637.18 = 163,113.60/x
  3. Step 3: Cross multiply
    387,730.31x = 581,637.18 × 163,113.60
  4. Step 4: Simplify right side
    387,730.31x = 94,872,934,935.32
  5. Step 5: Solve for x
    x = 94,872,934,935.32/387,730.31
  6. Step 6: Final answer
    x = 244,687.95

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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.