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Finding the Fourth Proportional to 375,140.78, 562,800.69 and 122,421.74

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Solution

The fourth proportional to 375,140.78, 562,800.69 and 122,421.74 is: 183,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,140.78 : 562,800.69 = 122,421.74 : x
  2. Step 2: Convert to fraction form
    375,140.78/562,800.69 = 122,421.74/x
  3. Step 3: Cross multiply
    375,140.78x = 562,800.69 × 122,421.74
  4. Step 4: Simplify right side
    375,140.78x = 68,899,036,929.00
  5. Step 5: Solve for x
    x = 68,899,036,929.00/375,140.78
  6. Step 6: Final answer
    x = 183,661.82

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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.