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Finding the Fourth Proportional to 665,301.94, 918,117.02 and 359,378.30

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Solution

The fourth proportional to 665,301.94, 918,117.02 and 359,378.30 is: 495,942.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,301.94 : 918,117.02 = 359,378.30 : x
  2. Step 2: Convert to fraction form
    665,301.94/918,117.02 = 359,378.30/x
  3. Step 3: Cross multiply
    665,301.94x = 918,117.02 × 359,378.30
  4. Step 4: Simplify right side
    665,301.94x = 329,951,333,848.67
  5. Step 5: Solve for x
    x = 329,951,333,848.67/665,301.94
  6. Step 6: Final answer
    x = 495,942.24

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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.