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Finding the Fourth Proportional to 666,615.65, 999,931.96 and 234,315.66

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Solution

The fourth proportional to 666,615.65, 999,931.96 and 234,315.66 is: 351,476.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,615.65 : 999,931.96 = 234,315.66 : x
  2. Step 2: Convert to fraction form
    666,615.65/999,931.96 = 234,315.66/x
  3. Step 3: Cross multiply
    666,615.65x = 999,931.96 × 234,315.66
  4. Step 4: Simplify right side
    666,615.65x = 234,299,719,051.84
  5. Step 5: Solve for x
    x = 234,299,719,051.84/666,615.65
  6. Step 6: Final answer
    x = 351,476.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.