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Finding the Fourth Proportional to 230,445.99, 345,668.98 and 72,686.74

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Solution

The fourth proportional to 230,445.99, 345,668.98 and 72,686.74 is: 109,030.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,445.99 : 345,668.98 = 72,686.74 : x
  2. Step 2: Convert to fraction form
    230,445.99/345,668.98 = 72,686.74/x
  3. Step 3: Cross multiply
    230,445.99x = 345,668.98 × 72,686.74
  4. Step 4: Simplify right side
    230,445.99x = 25,125,551,275.33
  5. Step 5: Solve for x
    x = 25,125,551,275.33/230,445.99
  6. Step 6: Final answer
    x = 109,030.11

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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.