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Finding the Fourth Proportional to 473,642.76, 653,619.37 and 258,778.21

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Solution

The fourth proportional to 473,642.76, 653,619.37 and 258,778.21 is: 357,109.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,642.76 : 653,619.37 = 258,778.21 : x
  2. Step 2: Convert to fraction form
    473,642.76/653,619.37 = 258,778.21/x
  3. Step 3: Cross multiply
    473,642.76x = 653,619.37 × 258,778.21
  4. Step 4: Simplify right side
    473,642.76x = 169,142,450,589.93
  5. Step 5: Solve for x
    x = 169,142,450,589.93/473,642.76
  6. Step 6: Final answer
    x = 357,109.76

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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.