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Finding the Fourth Proportional to 315,339.30, 435,169.44 and 172,102.50

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Solution

The fourth proportional to 315,339.30, 435,169.44 and 172,102.50 is: 237,502.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,339.30 : 435,169.44 = 172,102.50 : x
  2. Step 2: Convert to fraction form
    315,339.30/435,169.44 = 172,102.50/x
  3. Step 3: Cross multiply
    315,339.30x = 435,169.44 × 172,102.50
  4. Step 4: Simplify right side
    315,339.30x = 74,893,748,547.60
  5. Step 5: Solve for x
    x = 74,893,748,547.60/315,339.30
  6. Step 6: Final answer
    x = 237,502.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.