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Finding the Fourth Proportional to 478,440.32, 717,167.58 and 212,326.16

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Solution

The fourth proportional to 478,440.32, 717,167.58 and 212,326.16 is: 318,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,440.32 : 717,167.58 = 212,326.16 : x
  2. Step 2: Convert to fraction form
    478,440.32/717,167.58 = 212,326.16/x
  3. Step 3: Cross multiply
    478,440.32x = 717,167.58 × 212,326.16
  4. Step 4: Simplify right side
    478,440.32x = 152,273,434,752.06
  5. Step 5: Solve for x
    x = 152,273,434,752.06/478,440.32
  6. Step 6: Final answer
    x = 318,270.49

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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.