Home / 387,465.31-534,681.57-217,688.50

Finding the Fourth Proportional to 387,465.31, 534,681.57 and 217,688.50

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Solution

The fourth proportional to 387,465.31, 534,681.57 and 217,688.50 is: 300,398.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,465.31 : 534,681.57 = 217,688.50 : x
  2. Step 2: Convert to fraction form
    387,465.31/534,681.57 = 217,688.50/x
  3. Step 3: Cross multiply
    387,465.31x = 534,681.57 × 217,688.50
  4. Step 4: Simplify right side
    387,465.31x = 116,394,028,950.95
  5. Step 5: Solve for x
    x = 116,394,028,950.95/387,465.31
  6. Step 6: Final answer
    x = 300,398.58

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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.