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Finding the Fourth Proportional to 375,718.68, 563,315.46 and 139,030.56

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Solution

The fourth proportional to 375,718.68, 563,315.46 and 139,030.56 is: 208,448.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,718.68 : 563,315.46 = 139,030.56 : x
  2. Step 2: Convert to fraction form
    375,718.68/563,315.46 = 139,030.56/x
  3. Step 3: Cross multiply
    375,718.68x = 563,315.46 × 139,030.56
  4. Step 4: Simplify right side
    375,718.68x = 78,318,063,860.46
  5. Step 5: Solve for x
    x = 78,318,063,860.46/375,718.68
  6. Step 6: Final answer
    x = 208,448.68

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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.