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Finding the Fourth Proportional to 310,753,879.20, 434,249,215.20 and 310,753,879.20

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Solution

The fourth proportional to 310,753,879.20, 434,249,215.20 and 310,753,879.20 is: 434,249,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,753,879.20 : 434,249,215.20 = 310,753,879.20 : x
  2. Step 2: Convert to fraction form
    310,753,879.20/434,249,215.20 = 310,753,879.20/x
  3. Step 3: Cross multiply
    310,753,879.20x = 434,249,215.20 × 310,753,879.20
  4. Step 4: Simplify right side
    310,753,879.20x = 134,944,628,162,955,600
  5. Step 5: Solve for x
    x = 134,944,628,162,955,600/310,753,879.20
  6. Step 6: Final answer
    x = 434,249,215.20

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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.