Home / 388,909,331-536,662,432.54-219,354,225.14

Finding the Fourth Proportional to 388,909,331, 536,662,432.54 and 219,354,225.14

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Solution

The fourth proportional to 388,909,331, 536,662,432.54 and 219,354,225.14 is: 302,690,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,909,331 : 536,662,432.54 = 219,354,225.14 : x
  2. Step 2: Convert to fraction form
    388,909,331/536,662,432.54 = 219,354,225.14/x
  3. Step 3: Cross multiply
    388,909,331x = 536,662,432.54 × 219,354,225.14
  4. Step 4: Simplify right side
    388,909,331x = 117,719,172,051,559,216
  5. Step 5: Solve for x
    x = 117,719,172,051,559,216/388,909,331
  6. Step 6: Final answer
    x = 302,690,531.36

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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.