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Finding the Fourth Proportional to 368,641.53, 553,036.21 and 115,985.72

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Solution

The fourth proportional to 368,641.53, 553,036.21 and 115,985.72 is: 174,001.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,641.53 : 553,036.21 = 115,985.72 : x
  2. Step 2: Convert to fraction form
    368,641.53/553,036.21 = 115,985.72/x
  3. Step 3: Cross multiply
    368,641.53x = 553,036.21 × 115,985.72
  4. Step 4: Simplify right side
    368,641.53x = 64,144,304,095.55
  5. Step 5: Solve for x
    x = 64,144,304,095.55/368,641.53
  6. Step 6: Final answer
    x = 174,001.84

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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.