Home / 343,417.20-515,125.80-305,363.40

Finding the Fourth Proportional to 343,417.20, 515,125.80 and 305,363.40

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Solution

The fourth proportional to 343,417.20, 515,125.80 and 305,363.40 is: 458,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,417.20 : 515,125.80 = 305,363.40 : x
  2. Step 2: Convert to fraction form
    343,417.20/515,125.80 = 305,363.40/x
  3. Step 3: Cross multiply
    343,417.20x = 515,125.80 × 305,363.40
  4. Step 4: Simplify right side
    343,417.20x = 157,300,565,715.72
  5. Step 5: Solve for x
    x = 157,300,565,715.72/343,417.20
  6. Step 6: Final answer
    x = 458,045.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.