Home / 387,864.08-535,316.10-226,687.65

Finding the Fourth Proportional to 387,864.08, 535,316.10 and 226,687.65

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Solution

The fourth proportional to 387,864.08, 535,316.10 and 226,687.65 is: 312,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,864.08 : 535,316.10 = 226,687.65 : x
  2. Step 2: Convert to fraction form
    387,864.08/535,316.10 = 226,687.65/x
  3. Step 3: Cross multiply
    387,864.08x = 535,316.10 × 226,687.65
  4. Step 4: Simplify right side
    387,864.08x = 121,349,548,716.17
  5. Step 5: Solve for x
    x = 121,349,548,716.17/387,864.08
  6. Step 6: Final answer
    x = 312,866.17

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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.