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Finding the Fourth Proportional to 358,654.40, 537,981.60 and 172,030.40

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Solution

The fourth proportional to 358,654.40, 537,981.60 and 172,030.40 is: 258,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,654.40 : 537,981.60 = 172,030.40 : x
  2. Step 2: Convert to fraction form
    358,654.40/537,981.60 = 172,030.40/x
  3. Step 3: Cross multiply
    358,654.40x = 537,981.60 × 172,030.40
  4. Step 4: Simplify right side
    358,654.40x = 92,549,189,840.64
  5. Step 5: Solve for x
    x = 92,549,189,840.64/358,654.40
  6. Step 6: Final answer
    x = 258,045.60

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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.