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Finding the Fourth Proportional to 660,764.40, 991,146.60 and 187,465.20

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Solution

The fourth proportional to 660,764.40, 991,146.60 and 187,465.20 is: 281,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,764.40 : 991,146.60 = 187,465.20 : x
  2. Step 2: Convert to fraction form
    660,764.40/991,146.60 = 187,465.20/x
  3. Step 3: Cross multiply
    660,764.40x = 991,146.60 × 187,465.20
  4. Step 4: Simplify right side
    660,764.40x = 185,805,495,598.32
  5. Step 5: Solve for x
    x = 185,805,495,598.32/660,764.40
  6. Step 6: Final answer
    x = 281,197.80

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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.