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Finding the Fourth Proportional to 353,345.80, 530,018.70 and 213,377.80

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Solution

The fourth proportional to 353,345.80, 530,018.70 and 213,377.80 is: 320,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,345.80 : 530,018.70 = 213,377.80 : x
  2. Step 2: Convert to fraction form
    353,345.80/530,018.70 = 213,377.80/x
  3. Step 3: Cross multiply
    353,345.80x = 530,018.70 × 213,377.80
  4. Step 4: Simplify right side
    353,345.80x = 113,094,224,164.86
  5. Step 5: Solve for x
    x = 113,094,224,164.86/353,345.80
  6. Step 6: Final answer
    x = 320,066.70

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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.