Home / 309,534.51-427,127.94-173,574.19

Finding the Fourth Proportional to 309,534.51, 427,127.94 and 173,574.19

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Solution

The fourth proportional to 309,534.51, 427,127.94 and 173,574.19 is: 239,515.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,534.51 : 427,127.94 = 173,574.19 : x
  2. Step 2: Convert to fraction form
    309,534.51/427,127.94 = 173,574.19/x
  3. Step 3: Cross multiply
    309,534.51x = 427,127.94 × 173,574.19
  4. Step 4: Simplify right side
    309,534.51x = 74,138,386,211.87
  5. Step 5: Solve for x
    x = 74,138,386,211.87/309,534.51
  6. Step 6: Final answer
    x = 239,515.74

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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.