Home / 309,329.18-426,904.23-173,386.22

Finding the Fourth Proportional to 309,329.18, 426,904.23 and 173,386.22

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Solution

The fourth proportional to 309,329.18, 426,904.23 and 173,386.22 is: 239,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,329.18 : 426,904.23 = 173,386.22 : x
  2. Step 2: Convert to fraction form
    309,329.18/426,904.23 = 173,386.22/x
  3. Step 3: Cross multiply
    309,329.18x = 426,904.23 × 173,386.22
  4. Step 4: Simplify right side
    309,329.18x = 74,019,310,741.71
  5. Step 5: Solve for x
    x = 74,019,310,741.71/309,329.18
  6. Step 6: Final answer
    x = 239,289.78

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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.