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Finding the Fourth Proportional to 307,312.43, 424,060.16 and 171,333.59

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Solution

The fourth proportional to 307,312.43, 424,060.16 and 171,333.59 is: 236,423.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,312.43 : 424,060.16 = 171,333.59 : x
  2. Step 2: Convert to fraction form
    307,312.43/424,060.16 = 171,333.59/x
  3. Step 3: Cross multiply
    307,312.43x = 424,060.16 × 171,333.59
  4. Step 4: Simplify right side
    307,312.43x = 72,655,746,611.81
  5. Step 5: Solve for x
    x = 72,655,746,611.81/307,312.43
  6. Step 6: Final answer
    x = 236,423.07

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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.