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Finding the Fourth Proportional to 316,547.76, 436,819.32 and 173,280.36

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Solution

The fourth proportional to 316,547.76, 436,819.32 and 173,280.36 is: 239,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,547.76 : 436,819.32 = 173,280.36 : x
  2. Step 2: Convert to fraction form
    316,547.76/436,819.32 = 173,280.36/x
  3. Step 3: Cross multiply
    316,547.76x = 436,819.32 × 173,280.36
  4. Step 4: Simplify right side
    316,547.76x = 75,692,209,024.56
  5. Step 5: Solve for x
    x = 75,692,209,024.56/316,547.76
  6. Step 6: Final answer
    x = 239,117.82

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1.5x scale

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.