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Finding the Fourth Proportional to 321,430.21, 480,726.19 and 194,720.29

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Solution

The fourth proportional to 321,430.21, 480,726.19 and 194,720.29 is: 291,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,430.21 : 480,726.19 = 194,720.29 : x
  2. Step 2: Convert to fraction form
    321,430.21/480,726.19 = 194,720.29/x
  3. Step 3: Cross multiply
    321,430.21x = 480,726.19 × 194,720.29
  4. Step 4: Simplify right side
    321,430.21x = 93,607,143,127.40
  5. Step 5: Solve for x
    x = 93,607,143,127.40/321,430.21
  6. Step 6: Final answer
    x = 291,220.74

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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.