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Finding the Fourth Proportional to 260,407.96, 359,359.86 and 152,987.80

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Solution

The fourth proportional to 260,407.96, 359,359.86 and 152,987.80 is: 211,121.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,407.96 : 359,359.86 = 152,987.80 : x
  2. Step 2: Convert to fraction form
    260,407.96/359,359.86 = 152,987.80/x
  3. Step 3: Cross multiply
    260,407.96x = 359,359.86 × 152,987.80
  4. Step 4: Simplify right side
    260,407.96x = 54,977,674,389.71
  5. Step 5: Solve for x
    x = 54,977,674,389.71/260,407.96
  6. Step 6: Final answer
    x = 211,121.33

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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.