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Finding the Fourth Proportional to 343,645.72, 473,153.34 and 312,152.92

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Solution

The fourth proportional to 343,645.72, 473,153.34 and 312,152.92 is: 429,792.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,645.72 : 473,153.34 = 312,152.92 : x
  2. Step 2: Convert to fraction form
    343,645.72/473,153.34 = 312,152.92/x
  3. Step 3: Cross multiply
    343,645.72x = 473,153.34 × 312,152.92
  4. Step 4: Simplify right side
    343,645.72x = 147,696,196,688.75
  5. Step 5: Solve for x
    x = 147,696,196,688.75/343,645.72
  6. Step 6: Final answer
    x = 429,792.04

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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.