Home / 186,428.62-257,423.40-151,978.90

Finding the Fourth Proportional to 186,428.62, 257,423.40 and 151,978.90

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Solution

The fourth proportional to 186,428.62, 257,423.40 and 151,978.90 is: 209,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,428.62 : 257,423.40 = 151,978.90 : x
  2. Step 2: Convert to fraction form
    186,428.62/257,423.40 = 151,978.90/x
  3. Step 3: Cross multiply
    186,428.62x = 257,423.40 × 151,978.90
  4. Step 4: Simplify right side
    186,428.62x = 39,122,925,166.26
  5. Step 5: Solve for x
    x = 39,122,925,166.26/186,428.62
  6. Step 6: Final answer
    x = 209,854.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.