Home / 420,017.28-579,533.76-250,307.52

Finding the Fourth Proportional to 420,017.28, 579,533.76 and 250,307.52

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Solution

The fourth proportional to 420,017.28, 579,533.76 and 250,307.52 is: 345,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,017.28 : 579,533.76 = 250,307.52 : x
  2. Step 2: Convert to fraction form
    420,017.28/579,533.76 = 250,307.52/x
  3. Step 3: Cross multiply
    420,017.28x = 579,533.76 × 250,307.52
  4. Step 4: Simplify right side
    420,017.28x = 145,061,658,221.88
  5. Step 5: Solve for x
    x = 145,061,658,221.88/420,017.28
  6. Step 6: Final answer
    x = 345,370.69

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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.