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Finding the Fourth Proportional to 216,038.40, 298,292.40 and 131,269.20

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Solution

The fourth proportional to 216,038.40, 298,292.40 and 131,269.20 is: 181,248.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,038.40 : 298,292.40 = 131,269.20 : x
  2. Step 2: Convert to fraction form
    216,038.40/298,292.40 = 131,269.20/x
  3. Step 3: Cross multiply
    216,038.40x = 298,292.40 × 131,269.20
  4. Step 4: Simplify right side
    216,038.40x = 39,156,604,714.08
  5. Step 5: Solve for x
    x = 39,156,604,714.08/216,038.40
  6. Step 6: Final answer
    x = 181,248.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.