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Finding the Fourth Proportional to 319,126.48, 478,689.72 and 97,508.56

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Solution

The fourth proportional to 319,126.48, 478,689.72 and 97,508.56 is: 146,262.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,126.48 : 478,689.72 = 97,508.56 : x
  2. Step 2: Convert to fraction form
    319,126.48/478,689.72 = 97,508.56/x
  3. Step 3: Cross multiply
    319,126.48x = 478,689.72 × 97,508.56
  4. Step 4: Simplify right side
    319,126.48x = 46,676,345,284.00
  5. Step 5: Solve for x
    x = 46,676,345,284.00/319,126.48
  6. Step 6: Final answer
    x = 146,262.84

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1.5x scale

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.