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Finding the Fourth Proportional to 665,325.16, 918,148.97 and 359,401.52

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Solution

The fourth proportional to 665,325.16, 918,148.97 and 359,401.52 is: 495,974.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,325.16 : 918,148.97 = 359,401.52 : x
  2. Step 2: Convert to fraction form
    665,325.16/918,148.97 = 359,401.52/x
  3. Step 3: Cross multiply
    665,325.16x = 918,148.97 × 359,401.52
  4. Step 4: Simplify right side
    665,325.16x = 329,984,138,598.31
  5. Step 5: Solve for x
    x = 329,984,138,598.31/665,325.16
  6. Step 6: Final answer
    x = 495,974.24

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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.