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Finding the Fourth Proportional to 660,339.10, 990,508.65 and 161,703.10

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Solution

The fourth proportional to 660,339.10, 990,508.65 and 161,703.10 is: 242,554.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,339.10 : 990,508.65 = 161,703.10 : x
  2. Step 2: Convert to fraction form
    660,339.10/990,508.65 = 161,703.10/x
  3. Step 3: Cross multiply
    660,339.10x = 990,508.65 × 161,703.10
  4. Step 4: Simplify right side
    660,339.10x = 160,168,319,281.82
  5. Step 5: Solve for x
    x = 160,168,319,281.82/660,339.10
  6. Step 6: Final answer
    x = 242,554.65

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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.