Home / 388,272,381.06-535,827,489.42-212,068,688.84

Finding the Fourth Proportional to 388,272,381.06, 535,827,489.42 and 212,068,688.84

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Solution

The fourth proportional to 388,272,381.06, 535,827,489.42 and 212,068,688.84 is: 292,661,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,272,381.06 : 535,827,489.42 = 212,068,688.84 : x
  2. Step 2: Convert to fraction form
    388,272,381.06/535,827,489.42 = 212,068,688.84/x
  3. Step 3: Cross multiply
    388,272,381.06x = 535,827,489.42 × 212,068,688.84
  4. Step 4: Simplify right side
    388,272,381.06x = 113,632,233,125,728,384
  5. Step 5: Solve for x
    x = 113,632,233,125,728,384/388,272,381.06
  6. Step 6: Final answer
    x = 292,661,128.29

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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.