Home / 288,987.07-433,545.18-139,353.21

Finding the Fourth Proportional to 288,987.07, 433,545.18 and 139,353.21

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Solution

The fourth proportional to 288,987.07, 433,545.18 and 139,353.21 is: 209,060.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,987.07 : 433,545.18 = 139,353.21 : x
  2. Step 2: Convert to fraction form
    288,987.07/433,545.18 = 139,353.21/x
  3. Step 3: Cross multiply
    288,987.07x = 433,545.18 × 139,353.21
  4. Step 4: Simplify right side
    288,987.07x = 60,415,913,166.25
  5. Step 5: Solve for x
    x = 60,415,913,166.25/288,987.07
  6. Step 6: Final answer
    x = 209,060.96

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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.