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Finding the Fourth Proportional to 318,695.04, 478,038.24 and 108,479.52

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Solution

The fourth proportional to 318,695.04, 478,038.24 and 108,479.52 is: 162,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,695.04 : 478,038.24 = 108,479.52 : x
  2. Step 2: Convert to fraction form
    318,695.04/478,038.24 = 108,479.52/x
  3. Step 3: Cross multiply
    318,695.04x = 478,038.24 × 108,479.52
  4. Step 4: Simplify right side
    318,695.04x = 51,857,358,816.84
  5. Step 5: Solve for x
    x = 51,857,358,816.84/318,695.04
  6. Step 6: Final answer
    x = 162,717.81

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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.