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Finding the Fourth Proportional to 507,398.16, 761,139.48 and 170,422.80

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Solution

The fourth proportional to 507,398.16, 761,139.48 and 170,422.80 is: 255,648.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,398.16 : 761,139.48 = 170,422.80 : x
  2. Step 2: Convert to fraction form
    507,398.16/761,139.48 = 170,422.80/x
  3. Step 3: Cross multiply
    507,398.16x = 761,139.48 × 170,422.80
  4. Step 4: Simplify right side
    507,398.16x = 129,715,521,372.14
  5. Step 5: Solve for x
    x = 129,715,521,372.14/507,398.16
  6. Step 6: Final answer
    x = 255,648.39

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1.5x scale

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.