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Finding the Fourth Proportional to 519,484.50, 716,881.62 and 290,045.31

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Solution

The fourth proportional to 519,484.50, 716,881.62 and 290,045.31 is: 400,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,484.50 : 716,881.62 = 290,045.31 : x
  2. Step 2: Convert to fraction form
    519,484.50/716,881.62 = 290,045.31/x
  3. Step 3: Cross multiply
    519,484.50x = 716,881.62 × 290,045.31
  4. Step 4: Simplify right side
    519,484.50x = 207,928,151,706.20
  5. Step 5: Solve for x
    x = 207,928,151,706.20/519,484.50
  6. Step 6: Final answer
    x = 400,258.63

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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.