Home / 260,151.51-390,264.47-80,252.13

Finding the Fourth Proportional to 260,151.51, 390,264.47 and 80,252.13

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Solution

The fourth proportional to 260,151.51, 390,264.47 and 80,252.13 is: 120,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,151.51 : 390,264.47 = 80,252.13 : x
  2. Step 2: Convert to fraction form
    260,151.51/390,264.47 = 80,252.13/x
  3. Step 3: Cross multiply
    260,151.51x = 390,264.47 × 80,252.13
  4. Step 4: Simplify right side
    260,151.51x = 31,319,554,579.56
  5. Step 5: Solve for x
    x = 31,319,554,579.56/260,151.51
  6. Step 6: Final answer
    x = 120,389.67

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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.