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Finding the Fourth Proportional to 161,630.40, 242,402.40 and 56,438.40

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Solution

The fourth proportional to 161,630.40, 242,402.40 and 56,438.40 is: 84,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,630.40 : 242,402.40 = 56,438.40 : x
  2. Step 2: Convert to fraction form
    161,630.40/242,402.40 = 56,438.40/x
  3. Step 3: Cross multiply
    161,630.40x = 242,402.40 × 56,438.40
  4. Step 4: Simplify right side
    161,630.40x = 13,680,803,612.16
  5. Step 5: Solve for x
    x = 13,680,803,612.16/161,630.40
  6. Step 6: Final answer
    x = 84,642.52

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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.