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Finding the Fourth Proportional to 388,767.36, 536,501.45 and 216,696.23

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Solution

The fourth proportional to 388,767.36, 536,501.45 and 216,696.23 is: 299,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,767.36 : 536,501.45 = 216,696.23 : x
  2. Step 2: Convert to fraction form
    388,767.36/536,501.45 = 216,696.23/x
  3. Step 3: Cross multiply
    388,767.36x = 536,501.45 × 216,696.23
  4. Step 4: Simplify right side
    388,767.36x = 116,257,841,862.31
  5. Step 5: Solve for x
    x = 116,257,841,862.31/388,767.36
  6. Step 6: Final answer
    x = 299,042.19

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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.