Home / 350,429.10-525,643.65-128,784.30

Finding the Fourth Proportional to 350,429.10, 525,643.65 and 128,784.30

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Solution

The fourth proportional to 350,429.10, 525,643.65 and 128,784.30 is: 193,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,429.10 : 525,643.65 = 128,784.30 : x
  2. Step 2: Convert to fraction form
    350,429.10/525,643.65 = 128,784.30/x
  3. Step 3: Cross multiply
    350,429.10x = 525,643.65 × 128,784.30
  4. Step 4: Simplify right side
    350,429.10x = 67,694,649,514.70
  5. Step 5: Solve for x
    x = 67,694,649,514.70/350,429.10
  6. Step 6: Final answer
    x = 193,176.45

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1.5x scale

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.