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Finding the Fourth Proportional to 478,695.54, 718,148.31 and 141,762.42

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Solution

The fourth proportional to 478,695.54, 718,148.31 and 141,762.42 is: 212,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,695.54 : 718,148.31 = 141,762.42 : x
  2. Step 2: Convert to fraction form
    478,695.54/718,148.31 = 141,762.42/x
  3. Step 3: Cross multiply
    478,695.54x = 718,148.31 × 141,762.42
  4. Step 4: Simplify right side
    478,695.54x = 101,806,442,344.51
  5. Step 5: Solve for x
    x = 101,806,442,344.51/478,695.54
  6. Step 6: Final answer
    x = 212,674.73

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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.