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Finding the Fourth Proportional to 309,488.32, 427,085.76 and 175,352.32

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Solution

The fourth proportional to 309,488.32, 427,085.76 and 175,352.32 is: 241,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,488.32 : 427,085.76 = 175,352.32 : x
  2. Step 2: Convert to fraction form
    309,488.32/427,085.76 = 175,352.32/x
  3. Step 3: Cross multiply
    309,488.32x = 427,085.76 × 175,352.32
  4. Step 4: Simplify right side
    309,488.32x = 74,890,478,854.96
  5. Step 5: Solve for x
    x = 74,890,478,854.96/309,488.32
  6. Step 6: Final answer
    x = 241,981.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.