Home / 256,423.90-384,117.45-172,443.10

Finding the Fourth Proportional to 256,423.90, 384,117.45 and 172,443.10

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Solution

The fourth proportional to 256,423.90, 384,117.45 and 172,443.10 is: 258,316.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,423.90 : 384,117.45 = 172,443.10 : x
  2. Step 2: Convert to fraction form
    256,423.90/384,117.45 = 172,443.10/x
  3. Step 3: Cross multiply
    256,423.90x = 384,117.45 × 172,443.10
  4. Step 4: Simplify right side
    256,423.90x = 66,238,403,842.10
  5. Step 5: Solve for x
    x = 66,238,403,842.10/256,423.90
  6. Step 6: Final answer
    x = 258,316.03

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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.