Home / 289,214.60-432,947.10-257,721.80

Finding the Fourth Proportional to 289,214.60, 432,947.10 and 257,721.80

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Solution

The fourth proportional to 289,214.60, 432,947.10 and 257,721.80 is: 385,803.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,214.60 : 432,947.10 = 257,721.80 : x
  2. Step 2: Convert to fraction form
    289,214.60/432,947.10 = 257,721.80/x
  3. Step 3: Cross multiply
    289,214.60x = 432,947.10 × 257,721.80
  4. Step 4: Simplify right side
    289,214.60x = 111,579,905,916.78
  5. Step 5: Solve for x
    x = 111,579,905,916.78/289,214.60
  6. Step 6: Final answer
    x = 385,803.16

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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.