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Finding the Fourth Proportional to 389,557.95, 537,590.51 and 219,807.87

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Solution

The fourth proportional to 389,557.95, 537,590.51 and 219,807.87 is: 303,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,557.95 : 537,590.51 = 219,807.87 : x
  2. Step 2: Convert to fraction form
    389,557.95/537,590.51 = 219,807.87/x
  3. Step 3: Cross multiply
    389,557.95x = 537,590.51 × 219,807.87
  4. Step 4: Simplify right side
    389,557.95x = 118,166,624,935.31
  5. Step 5: Solve for x
    x = 118,166,624,935.31/389,557.95
  6. Step 6: Final answer
    x = 303,335.16

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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.