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Finding the Fourth Proportional to 230,526.66, 318,128.18 and 128,558.57

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Solution

The fourth proportional to 230,526.66, 318,128.18 and 128,558.57 is: 177,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,526.66 : 318,128.18 = 128,558.57 : x
  2. Step 2: Convert to fraction form
    230,526.66/318,128.18 = 128,558.57/x
  3. Step 3: Cross multiply
    230,526.66x = 318,128.18 × 128,558.57
  4. Step 4: Simplify right side
    230,526.66x = 40,898,103,897.50
  5. Step 5: Solve for x
    x = 40,898,103,897.50/230,526.66
  6. Step 6: Final answer
    x = 177,411.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.