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Finding the Fourth Proportional to 316,962.16, 475,598.04 and 139,447

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Solution

The fourth proportional to 316,962.16, 475,598.04 and 139,447 is: 209,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,962.16 : 475,598.04 = 139,447 : x
  2. Step 2: Convert to fraction form
    316,962.16/475,598.04 = 139,447/x
  3. Step 3: Cross multiply
    316,962.16x = 475,598.04 × 139,447
  4. Step 4: Simplify right side
    316,962.16x = 66,320,719,883.88
  5. Step 5: Solve for x
    x = 66,320,719,883.88/316,962.16
  6. Step 6: Final answer
    x = 209,238.60

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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.