Home / 388,870.47-536,673.40-216,765.19

Finding the Fourth Proportional to 388,870.47, 536,673.40 and 216,765.19

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Solution

The fourth proportional to 388,870.47, 536,673.40 and 216,765.19 is: 299,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,870.47 : 536,673.40 = 216,765.19 : x
  2. Step 2: Convert to fraction form
    388,870.47/536,673.40 = 216,765.19/x
  3. Step 3: Cross multiply
    388,870.47x = 536,673.40 × 216,765.19
  4. Step 4: Simplify right side
    388,870.47x = 116,332,110,138.48
  5. Step 5: Solve for x
    x = 116,332,110,138.48/388,870.47
  6. Step 6: Final answer
    x = 299,153.88

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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.