Home / 289,111.40-433,650.90-89,430.20

Finding the Fourth Proportional to 289,111.40, 433,650.90 and 89,430.20

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Solution

The fourth proportional to 289,111.40, 433,650.90 and 89,430.20 is: 134,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,111.40 : 433,650.90 = 89,430.20 : x
  2. Step 2: Convert to fraction form
    289,111.40/433,650.90 = 89,430.20/x
  3. Step 3: Cross multiply
    289,111.40x = 433,650.90 × 89,430.20
  4. Step 4: Simplify right side
    289,111.40x = 38,781,486,717.18
  5. Step 5: Solve for x
    x = 38,781,486,717.18/289,111.40
  6. Step 6: Final answer
    x = 134,140.29

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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.