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Finding the Fourth Proportional to 470,957.20, 706,432.56 and 155,439.52

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Solution

The fourth proportional to 470,957.20, 706,432.56 and 155,439.52 is: 233,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,957.20 : 706,432.56 = 155,439.52 : x
  2. Step 2: Convert to fraction form
    470,957.20/706,432.56 = 155,439.52/x
  3. Step 3: Cross multiply
    470,957.20x = 706,432.56 × 155,439.52
  4. Step 4: Simplify right side
    470,957.20x = 109,807,538,038.77
  5. Step 5: Solve for x
    x = 109,807,538,038.77/470,957.20
  6. Step 6: Final answer
    x = 233,158.21

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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.