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Finding the Fourth Proportional to 660,992.40, 991,488.60 and 162,356.40

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Solution

The fourth proportional to 660,992.40, 991,488.60 and 162,356.40 is: 243,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,992.40 : 991,488.60 = 162,356.40 : x
  2. Step 2: Convert to fraction form
    660,992.40/991,488.60 = 162,356.40/x
  3. Step 3: Cross multiply
    660,992.40x = 991,488.60 × 162,356.40
  4. Step 4: Simplify right side
    660,992.40x = 160,974,519,737.04
  5. Step 5: Solve for x
    x = 160,974,519,737.04/660,992.40
  6. Step 6: Final answer
    x = 243,534.60

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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.