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Finding the Fourth Proportional to 219,276.40, 307,686.80 and 219,276.40

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Solution

The fourth proportional to 219,276.40, 307,686.80 and 219,276.40 is: 307,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,276.40 : 307,686.80 = 219,276.40 : x
  2. Step 2: Convert to fraction form
    219,276.40/307,686.80 = 219,276.40/x
  3. Step 3: Cross multiply
    219,276.40x = 307,686.80 × 219,276.40
  4. Step 4: Simplify right side
    219,276.40x = 67,468,453,831.52
  5. Step 5: Solve for x
    x = 67,468,453,831.52/219,276.40
  6. Step 6: Final answer
    x = 307,686.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.