Home / 309,622.04-427,283.30-173,686.20

Finding the Fourth Proportional to 309,622.04, 427,283.30 and 173,686.20

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Solution

The fourth proportional to 309,622.04, 427,283.30 and 173,686.20 is: 239,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,622.04 : 427,283.30 = 173,686.20 : x
  2. Step 2: Convert to fraction form
    309,622.04/427,283.30 = 173,686.20/x
  3. Step 3: Cross multiply
    309,622.04x = 427,283.30 × 173,686.20
  4. Step 4: Simplify right side
    309,622.04x = 74,213,212,700.46
  5. Step 5: Solve for x
    x = 74,213,212,700.46/309,622.04
  6. Step 6: Final answer
    x = 239,689.70

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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.