Home / 289,285.68-433,928.46-89,607.72

Finding the Fourth Proportional to 289,285.68, 433,928.46 and 89,607.72

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Solution

The fourth proportional to 289,285.68, 433,928.46 and 89,607.72 is: 134,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,285.68 : 433,928.46 = 89,607.72 : x
  2. Step 2: Convert to fraction form
    289,285.68/433,928.46 = 89,607.72/x
  3. Step 3: Cross multiply
    289,285.68x = 433,928.46 × 89,607.72
  4. Step 4: Simplify right side
    289,285.68x = 38,883,339,943.71
  5. Step 5: Solve for x
    x = 38,883,339,943.71/289,285.68
  6. Step 6: Final answer
    x = 134,411.56

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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.