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Finding the Fourth Proportional to 611,461.61, 916,897.62 and 256,380.29

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Solution

The fourth proportional to 611,461.61, 916,897.62 and 256,380.29 is: 384,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,461.61 : 916,897.62 = 256,380.29 : x
  2. Step 2: Convert to fraction form
    611,461.61/916,897.62 = 256,380.29/x
  3. Step 3: Cross multiply
    611,461.61x = 916,897.62 × 256,380.29
  4. Step 4: Simplify right side
    611,461.61x = 235,074,477,531.21
  5. Step 5: Solve for x
    x = 235,074,477,531.21/611,461.61
  6. Step 6: Final answer
    x = 384,446.83

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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.