Home / 315,746.22-473,619.33-128,772.30

Finding the Fourth Proportional to 315,746.22, 473,619.33 and 128,772.30

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Solution

The fourth proportional to 315,746.22, 473,619.33 and 128,772.30 is: 193,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,746.22 : 473,619.33 = 128,772.30 : x
  2. Step 2: Convert to fraction form
    315,746.22/473,619.33 = 128,772.30/x
  3. Step 3: Cross multiply
    315,746.22x = 473,619.33 × 128,772.30
  4. Step 4: Simplify right side
    315,746.22x = 60,989,050,448.56
  5. Step 5: Solve for x
    x = 60,989,050,448.56/315,746.22
  6. Step 6: Final answer
    x = 193,158.45

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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.