Home / 286,249,721.60-395,041,489.32-215,560,615.88

Finding the Fourth Proportional to 286,249,721.60, 395,041,489.32 and 215,560,615.88

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Solution

The fourth proportional to 286,249,721.60, 395,041,489.32 and 215,560,615.88 is: 297,486,356.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,249,721.60 : 395,041,489.32 = 215,560,615.88 : x
  2. Step 2: Convert to fraction form
    286,249,721.60/395,041,489.32 = 215,560,615.88/x
  3. Step 3: Cross multiply
    286,249,721.60x = 395,041,489.32 × 215,560,615.88
  4. Step 4: Simplify right side
    286,249,721.60x = 85,155,386,735,971,632
  5. Step 5: Solve for x
    x = 85,155,386,735,971,632/286,249,721.60
  6. Step 6: Final answer
    x = 297,486,356.53

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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.