Home / 391,523,069.16-540,315,700.38-215,324,702.28

Finding the Fourth Proportional to 391,523,069.16, 540,315,700.38 and 215,324,702.28

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Solution

The fourth proportional to 391,523,069.16, 540,315,700.38 and 215,324,702.28 is: 297,155,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,523,069.16 : 540,315,700.38 = 215,324,702.28 : x
  2. Step 2: Convert to fraction form
    391,523,069.16/540,315,700.38 = 215,324,702.28/x
  3. Step 3: Cross multiply
    391,523,069.16x = 540,315,700.38 × 215,324,702.28
  4. Step 4: Simplify right side
    391,523,069.16x = 116,343,317,321,533,184
  5. Step 5: Solve for x
    x = 116,343,317,321,533,184/391,523,069.16
  6. Step 6: Final answer
    x = 297,155,714.40

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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.