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Finding the Fourth Proportional to 265,549.61, 398,442.14 and 139,159.81

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Solution

The fourth proportional to 265,549.61, 398,442.14 and 139,159.81 is: 208,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,549.61 : 398,442.14 = 139,159.81 : x
  2. Step 2: Convert to fraction form
    265,549.61/398,442.14 = 139,159.81/x
  3. Step 3: Cross multiply
    265,549.61x = 398,442.14 × 139,159.81
  4. Step 4: Simplify right side
    265,549.61x = 55,447,132,822.50
  5. Step 5: Solve for x
    x = 55,447,132,822.50/265,549.61
  6. Step 6: Final answer
    x = 208,801.41

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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.