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Finding the Fourth Proportional to 390,599.04, 538,809.65 and 227,237.20

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Solution

The fourth proportional to 390,599.04, 538,809.65 and 227,237.20 is: 313,461.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,599.04 : 538,809.65 = 227,237.20 : x
  2. Step 2: Convert to fraction form
    390,599.04/538,809.65 = 227,237.20/x
  3. Step 3: Cross multiply
    390,599.04x = 538,809.65 × 227,237.20
  4. Step 4: Simplify right side
    390,599.04x = 122,437,595,846.12
  5. Step 5: Solve for x
    x = 122,437,595,846.12/390,599.04
  6. Step 6: Final answer
    x = 313,461.07

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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.