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Finding the Fourth Proportional to 553,179.87, 763,411.75 and 308,164.34

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Solution

The fourth proportional to 553,179.87, 763,411.75 and 308,164.34 is: 425,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,179.87 : 763,411.75 = 308,164.34 : x
  2. Step 2: Convert to fraction form
    553,179.87/763,411.75 = 308,164.34/x
  3. Step 3: Cross multiply
    553,179.87x = 763,411.75 × 308,164.34
  4. Step 4: Simplify right side
    553,179.87x = 235,256,279,225.11
  5. Step 5: Solve for x
    x = 235,256,279,225.11/553,179.87
  6. Step 6: Final answer
    x = 425,279.90

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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.