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Finding the Fourth Proportional to 288,687.90, 432,801.45 and 122,339.10

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Solution

The fourth proportional to 288,687.90, 432,801.45 and 122,339.10 is: 183,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,687.90 : 432,801.45 = 122,339.10 : x
  2. Step 2: Convert to fraction form
    288,687.90/432,801.45 = 122,339.10/x
  3. Step 3: Cross multiply
    288,687.90x = 432,801.45 × 122,339.10
  4. Step 4: Simplify right side
    288,687.90x = 52,948,539,871.70
  5. Step 5: Solve for x
    x = 52,948,539,871.70/288,687.90
  6. Step 6: Final answer
    x = 183,411.01

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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.