Home / 387,916.65-581,875.61-121,697.60

Finding the Fourth Proportional to 387,916.65, 581,875.61 and 121,697.60

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Solution

The fourth proportional to 387,916.65, 581,875.61 and 121,697.60 is: 182,546.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,916.65 : 581,875.61 = 121,697.60 : x
  2. Step 2: Convert to fraction form
    387,916.65/581,875.61 = 121,697.60/x
  3. Step 3: Cross multiply
    387,916.65x = 581,875.61 × 121,697.60
  4. Step 4: Simplify right side
    387,916.65x = 70,812,861,717.67
  5. Step 5: Solve for x
    x = 70,812,861,717.67/387,916.65
  6. Step 6: Final answer
    x = 182,546.59

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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.