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Finding the Fourth Proportional to 666,359, 999,642.42 and 216,973.76

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Solution

The fourth proportional to 666,359, 999,642.42 and 216,973.76 is: 325,494.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,359 : 999,642.42 = 216,973.76 : x
  2. Step 2: Convert to fraction form
    666,359/999,642.42 = 216,973.76/x
  3. Step 3: Cross multiply
    666,359x = 999,642.42 × 216,973.76
  4. Step 4: Simplify right side
    666,359x = 216,896,174,522.90
  5. Step 5: Solve for x
    x = 216,896,174,522.90/666,359
  6. Step 6: Final answer
    x = 325,494.48

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1.5x scale

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.