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Finding the Fourth Proportional to 316,897.20, 475,345.80 and 130,042.80

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Solution

The fourth proportional to 316,897.20, 475,345.80 and 130,042.80 is: 195,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,897.20 : 475,345.80 = 130,042.80 : x
  2. Step 2: Convert to fraction form
    316,897.20/475,345.80 = 130,042.80/x
  3. Step 3: Cross multiply
    316,897.20x = 475,345.80 × 130,042.80
  4. Step 4: Simplify right side
    316,897.20x = 61,815,298,800.24
  5. Step 5: Solve for x
    x = 61,815,298,800.24/316,897.20
  6. Step 6: Final answer
    x = 195,064.20

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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.