Home / 390,351.36-538,487.04-246,869.76

Finding the Fourth Proportional to 390,351.36, 538,487.04 and 246,869.76

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Solution

The fourth proportional to 390,351.36, 538,487.04 and 246,869.76 is: 340,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,351.36 : 538,487.04 = 246,869.76 : x
  2. Step 2: Convert to fraction form
    390,351.36/538,487.04 = 246,869.76/x
  3. Step 3: Cross multiply
    390,351.36x = 538,487.04 × 246,869.76
  4. Step 4: Simplify right side
    390,351.36x = 132,936,166,327.91
  5. Step 5: Solve for x
    x = 132,936,166,327.91/390,351.36
  6. Step 6: Final answer
    x = 340,555.15

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1.5x scale

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.