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Finding the Fourth Proportional to 572,872.40, 858,142.20 and 292,547.60

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Solution

The fourth proportional to 572,872.40, 858,142.20 and 292,547.60 is: 438,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,872.40 : 858,142.20 = 292,547.60 : x
  2. Step 2: Convert to fraction form
    572,872.40/858,142.20 = 292,547.60/x
  3. Step 3: Cross multiply
    572,872.40x = 858,142.20 × 292,547.60
  4. Step 4: Simplify right side
    572,872.40x = 251,047,441,068.72
  5. Step 5: Solve for x
    x = 251,047,441,068.72/572,872.40
  6. Step 6: Final answer
    x = 438,225.76

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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.