Home / 315,342,385.36-470,098,685.86-310,372,821.20

Finding the Fourth Proportional to 315,342,385.36, 470,098,685.86 and 310,372,821.20

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Solution

The fourth proportional to 315,342,385.36, 470,098,685.86 and 310,372,821.20 is: 462,690,276.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,342,385.36 : 470,098,685.86 = 310,372,821.20 : x
  2. Step 2: Convert to fraction form
    315,342,385.36/470,098,685.86 = 310,372,821.20/x
  3. Step 3: Cross multiply
    315,342,385.36x = 470,098,685.86 × 310,372,821.20
  4. Step 4: Simplify right side
    315,342,385.36x = 145,905,855,372,780,736
  5. Step 5: Solve for x
    x = 145,905,855,372,780,736/315,342,385.36
  6. Step 6: Final answer
    x = 462,690,276.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.