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Finding the Fourth Proportional to 478,541.40, 717,909.30 and 163,030.20

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Solution

The fourth proportional to 478,541.40, 717,909.30 and 163,030.20 is: 244,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,541.40 : 717,909.30 = 163,030.20 : x
  2. Step 2: Convert to fraction form
    478,541.40/717,909.30 = 163,030.20/x
  3. Step 3: Cross multiply
    478,541.40x = 717,909.30 × 163,030.20
  4. Step 4: Simplify right side
    478,541.40x = 117,040,896,760.86
  5. Step 5: Solve for x
    x = 117,040,896,760.86/478,541.40
  6. Step 6: Final answer
    x = 244,578.41

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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.