Home / 315,023,190.45-472,393,068.08-120,870,078.45

Finding the Fourth Proportional to 315,023,190.45, 472,393,068.08 and 120,870,078.45

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Solution

The fourth proportional to 315,023,190.45, 472,393,068.08 and 120,870,078.45 is: 181,250,742.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,023,190.45 : 472,393,068.08 = 120,870,078.45 : x
  2. Step 2: Convert to fraction form
    315,023,190.45/472,393,068.08 = 120,870,078.45/x
  3. Step 3: Cross multiply
    315,023,190.45x = 472,393,068.08 × 120,870,078.45
  4. Step 4: Simplify right side
    315,023,190.45x = 57,098,187,197,461,440
  5. Step 5: Solve for x
    x = 57,098,187,197,461,440/315,023,190.45
  6. Step 6: Final answer
    x = 181,250,742.58

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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.