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Finding the Fourth Proportional to 517,528, 776,292 and 143,551

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Solution

The fourth proportional to 517,528, 776,292 and 143,551 is: 215,326.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,528 : 776,292 = 143,551 : x
  2. Step 2: Convert to fraction form
    517,528/776,292 = 143,551/x
  3. Step 3: Cross multiply
    517,528x = 776,292 × 143,551
  4. Step 4: Simplify right side
    517,528x = 111,437,492,892
  5. Step 5: Solve for x
    x = 111,437,492,892/517,528
  6. Step 6: Final answer
    x = 215,326.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.