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Finding the Fourth Proportional to 369,363.53, 509,691.08 and 208,258.18

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Solution

The fourth proportional to 369,363.53, 509,691.08 and 208,258.18 is: 287,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,363.53 : 509,691.08 = 208,258.18 : x
  2. Step 2: Convert to fraction form
    369,363.53/509,691.08 = 208,258.18/x
  3. Step 3: Cross multiply
    369,363.53x = 509,691.08 × 208,258.18
  4. Step 4: Simplify right side
    369,363.53x = 106,147,335,929.45
  5. Step 5: Solve for x
    x = 106,147,335,929.45/369,363.53
  6. Step 6: Final answer
    x = 287,379.04

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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.