Home / 386,504.16-579,823.20-130,312.32

Finding the Fourth Proportional to 386,504.16, 579,823.20 and 130,312.32

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Solution

The fourth proportional to 386,504.16, 579,823.20 and 130,312.32 is: 195,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,504.16 : 579,823.20 = 130,312.32 : x
  2. Step 2: Convert to fraction form
    386,504.16/579,823.20 = 130,312.32/x
  3. Step 3: Cross multiply
    386,504.16x = 579,823.20 × 130,312.32
  4. Step 4: Simplify right side
    386,504.16x = 75,558,106,381.82
  5. Step 5: Solve for x
    x = 75,558,106,381.82/386,504.16
  6. Step 6: Final answer
    x = 195,491.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.