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Finding the Fourth Proportional to 345,985, 519,210.42 and 121,347.52

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Solution

The fourth proportional to 345,985, 519,210.42 and 121,347.52 is: 182,102.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,985 : 519,210.42 = 121,347.52 : x
  2. Step 2: Convert to fraction form
    345,985/519,210.42 = 121,347.52/x
  3. Step 3: Cross multiply
    345,985x = 519,210.42 × 121,347.52
  4. Step 4: Simplify right side
    345,985x = 63,004,896,825.16
  5. Step 5: Solve for x
    x = 63,004,896,825.16/345,985
  6. Step 6: Final answer
    x = 182,102.97

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1.5x scale

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.