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Finding the Fourth Proportional to 375,420.91, 563,013.61 and 122,643.80

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Solution

The fourth proportional to 375,420.91, 563,013.61 and 122,643.80 is: 183,927.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,420.91 : 563,013.61 = 122,643.80 : x
  2. Step 2: Convert to fraction form
    375,420.91/563,013.61 = 122,643.80/x
  3. Step 3: Cross multiply
    375,420.91x = 563,013.61 × 122,643.80
  4. Step 4: Simplify right side
    375,420.91x = 69,050,128,582.12
  5. Step 5: Solve for x
    x = 69,050,128,582.12/375,420.91
  6. Step 6: Final answer
    x = 183,927.23

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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.