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Finding the Fourth Proportional to 318,703.32, 439,813.24 and 173,510.10

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Solution

The fourth proportional to 318,703.32, 439,813.24 and 173,510.10 is: 239,445.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,703.32 : 439,813.24 = 173,510.10 : x
  2. Step 2: Convert to fraction form
    318,703.32/439,813.24 = 173,510.10/x
  3. Step 3: Cross multiply
    318,703.32x = 439,813.24 × 173,510.10
  4. Step 4: Simplify right side
    318,703.32x = 76,312,039,187.87
  5. Step 5: Solve for x
    x = 76,312,039,187.87/318,703.32
  6. Step 6: Final answer
    x = 239,445.39

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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.