Home / 288,875.69-433,416.09-128,937.06

Finding the Fourth Proportional to 288,875.69, 433,416.09 and 128,937.06

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Solution

The fourth proportional to 288,875.69, 433,416.09 and 128,937.06 is: 193,451.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,875.69 : 433,416.09 = 128,937.06 : x
  2. Step 2: Convert to fraction form
    288,875.69/433,416.09 = 128,937.06/x
  3. Step 3: Cross multiply
    288,875.69x = 433,416.09 × 128,937.06
  4. Step 4: Simplify right side
    288,875.69x = 55,883,396,401.30
  5. Step 5: Solve for x
    x = 55,883,396,401.30/288,875.69
  6. Step 6: Final answer
    x = 193,451.36

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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.