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Finding the Fourth Proportional to 665,301.32, 918,116.16 and 359,377.69

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Solution

The fourth proportional to 665,301.32, 918,116.16 and 359,377.69 is: 495,941.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,301.32 : 918,116.16 = 359,377.69 : x
  2. Step 2: Convert to fraction form
    665,301.32/918,116.16 = 359,377.69/x
  3. Step 3: Cross multiply
    665,301.32x = 918,116.16 × 359,377.69
  4. Step 4: Simplify right side
    665,301.32x = 329,950,458,345.00
  5. Step 5: Solve for x
    x = 329,950,458,345.00/665,301.32
  6. Step 6: Final answer
    x = 495,941.39

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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.