Home / 530,180.25-731,643.08-315,315.60

Finding the Fourth Proportional to 530,180.25, 731,643.08 and 315,315.60

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Solution

The fourth proportional to 530,180.25, 731,643.08 and 315,315.60 is: 435,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,180.25 : 731,643.08 = 315,315.60 : x
  2. Step 2: Convert to fraction form
    530,180.25/731,643.08 = 315,315.60/x
  3. Step 3: Cross multiply
    530,180.25x = 731,643.08 × 315,315.60
  4. Step 4: Simplify right side
    530,180.25x = 230,698,475,179.47
  5. Step 5: Solve for x
    x = 230,698,475,179.47/530,180.25
  6. Step 6: Final answer
    x = 435,132.16

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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.