Home / 260,337.71-390,515.07-89,557.67

Finding the Fourth Proportional to 260,337.71, 390,515.07 and 89,557.67

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Solution

The fourth proportional to 260,337.71, 390,515.07 and 89,557.67 is: 134,339.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,337.71 : 390,515.07 = 89,557.67 : x
  2. Step 2: Convert to fraction form
    260,337.71/390,515.07 = 89,557.67/x
  3. Step 3: Cross multiply
    260,337.71x = 390,515.07 × 89,557.67
  4. Step 4: Simplify right side
    260,337.71x = 34,973,617,816.51
  5. Step 5: Solve for x
    x = 34,973,617,816.51/260,337.71
  6. Step 6: Final answer
    x = 134,339.42

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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.