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Finding the Fourth Proportional to 611,306.10, 916,999.65 and 162,020.70

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Solution

The fourth proportional to 611,306.10, 916,999.65 and 162,020.70 is: 243,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,306.10 : 916,999.65 = 162,020.70 : x
  2. Step 2: Convert to fraction form
    611,306.10/916,999.65 = 162,020.70/x
  3. Step 3: Cross multiply
    611,306.10x = 916,999.65 × 162,020.70
  4. Step 4: Simplify right side
    611,306.10x = 148,572,925,192.76
  5. Step 5: Solve for x
    x = 148,572,925,192.76/611,306.10
  6. Step 6: Final answer
    x = 243,041.78

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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.