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Finding the Fourth Proportional to 370,726.32, 556,004.16 and 221,008.80

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Solution

The fourth proportional to 370,726.32, 556,004.16 and 221,008.80 is: 331,462.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,726.32 : 556,004.16 = 221,008.80 : x
  2. Step 2: Convert to fraction form
    370,726.32/556,004.16 = 221,008.80/x
  3. Step 3: Cross multiply
    370,726.32x = 556,004.16 × 221,008.80
  4. Step 4: Simplify right side
    370,726.32x = 122,881,812,196.61
  5. Step 5: Solve for x
    x = 122,881,812,196.61/370,726.32
  6. Step 6: Final answer
    x = 331,462.34

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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.