Home / 420,114.12-579,592.44-258,689.22

Finding the Fourth Proportional to 420,114.12, 579,592.44 and 258,689.22

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Solution

The fourth proportional to 420,114.12, 579,592.44 and 258,689.22 is: 356,889.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,114.12 : 579,592.44 = 258,689.22 : x
  2. Step 2: Convert to fraction form
    420,114.12/579,592.44 = 258,689.22/x
  3. Step 3: Cross multiply
    420,114.12x = 579,592.44 × 258,689.22
  4. Step 4: Simplify right side
    420,114.12x = 149,934,316,221.50
  5. Step 5: Solve for x
    x = 149,934,316,221.50/420,114.12
  6. Step 6: Final answer
    x = 356,889.50

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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.