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Finding the Fourth Proportional to 346,605, 519,907.50 and 124,989

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Solution

The fourth proportional to 346,605, 519,907.50 and 124,989 is: 187,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,605 : 519,907.50 = 124,989 : x
  2. Step 2: Convert to fraction form
    346,605/519,907.50 = 124,989/x
  3. Step 3: Cross multiply
    346,605x = 519,907.50 × 124,989
  4. Step 4: Simplify right side
    346,605x = 64,982,718,517.50
  5. Step 5: Solve for x
    x = 64,982,718,517.50/346,605
  6. Step 6: Final answer
    x = 187,483.50

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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.