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Finding the Fourth Proportional to 521,341.76, 719,512.24 and 317,512.16

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Solution

The fourth proportional to 521,341.76, 719,512.24 and 317,512.16 is: 438,203.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,341.76 : 719,512.24 = 317,512.16 : x
  2. Step 2: Convert to fraction form
    521,341.76/719,512.24 = 317,512.16/x
  3. Step 3: Cross multiply
    521,341.76x = 719,512.24 × 317,512.16
  4. Step 4: Simplify right side
    521,341.76x = 228,453,885,468.84
  5. Step 5: Solve for x
    x = 228,453,885,468.84/521,341.76
  6. Step 6: Final answer
    x = 438,203.69

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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.