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Finding the Fourth Proportional to 542,407.80, 813,611.70 and 187,303.80

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Solution

The fourth proportional to 542,407.80, 813,611.70 and 187,303.80 is: 280,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,407.80 : 813,611.70 = 187,303.80 : x
  2. Step 2: Convert to fraction form
    542,407.80/813,611.70 = 187,303.80/x
  3. Step 3: Cross multiply
    542,407.80x = 813,611.70 × 187,303.80
  4. Step 4: Simplify right side
    542,407.80x = 152,392,563,134.46
  5. Step 5: Solve for x
    x = 152,392,563,134.46/542,407.80
  6. Step 6: Final answer
    x = 280,955.70

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Similar ratio
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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.