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Finding the Fourth Proportional to 388,070.70, 535,456.71 and 226,894.38

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Solution

The fourth proportional to 388,070.70, 535,456.71 and 226,894.38 is: 313,066.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,070.70 : 535,456.71 = 226,894.38 : x
  2. Step 2: Convert to fraction form
    388,070.70/535,456.71 = 226,894.38/x
  3. Step 3: Cross multiply
    388,070.70x = 535,456.71 × 226,894.38
  4. Step 4: Simplify right side
    388,070.70x = 121,492,118,232.29
  5. Step 5: Solve for x
    x = 121,492,118,232.29/388,070.70
  6. Step 6: Final answer
    x = 313,066.97

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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.