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Finding the Fourth Proportional to 660,672.40, 991,008.60 and 162,036.40

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Solution

The fourth proportional to 660,672.40, 991,008.60 and 162,036.40 is: 243,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,672.40 : 991,008.60 = 162,036.40 : x
  2. Step 2: Convert to fraction form
    660,672.40/991,008.60 = 162,036.40/x
  3. Step 3: Cross multiply
    660,672.40x = 991,008.60 × 162,036.40
  4. Step 4: Simplify right side
    660,672.40x = 160,579,465,913.04
  5. Step 5: Solve for x
    x = 160,579,465,913.04/660,672.40
  6. Step 6: Final answer
    x = 243,054.60

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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.