Home / 309,927.40-427,666.91-173,976.29

Finding the Fourth Proportional to 309,927.40, 427,666.91 and 173,976.29

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Solution

The fourth proportional to 309,927.40, 427,666.91 and 173,976.29 is: 240,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,927.40 : 427,666.91 = 173,976.29 : x
  2. Step 2: Convert to fraction form
    309,927.40/427,666.91 = 173,976.29/x
  3. Step 3: Cross multiply
    309,927.40x = 427,666.91 × 173,976.29
  4. Step 4: Simplify right side
    309,927.40x = 74,403,900,953.10
  5. Step 5: Solve for x
    x = 74,403,900,953.10/309,927.40
  6. Step 6: Final answer
    x = 240,068.81

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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.