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Finding the Fourth Proportional to 415,461.60, 623,386.80 and 216,007.20

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Solution

The fourth proportional to 415,461.60, 623,386.80 and 216,007.20 is: 324,111.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,461.60 : 623,386.80 = 216,007.20 : x
  2. Step 2: Convert to fraction form
    415,461.60/623,386.80 = 216,007.20/x
  3. Step 3: Cross multiply
    415,461.60x = 623,386.80 × 216,007.20
  4. Step 4: Simplify right side
    415,461.60x = 134,656,037,184.96
  5. Step 5: Solve for x
    x = 134,656,037,184.96/415,461.60
  6. Step 6: Final answer
    x = 324,111.87

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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.