Home / 258,980,580.48-388,470,867.84-143,910,088.32

Finding the Fourth Proportional to 258,980,580.48, 388,470,867.84 and 143,910,088.32

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Solution

The fourth proportional to 258,980,580.48, 388,470,867.84 and 143,910,088.32 is: 215,865,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,980,580.48 : 388,470,867.84 = 143,910,088.32 : x
  2. Step 2: Convert to fraction form
    258,980,580.48/388,470,867.84 = 143,910,088.32/x
  3. Step 3: Cross multiply
    258,980,580.48x = 388,470,867.84 × 143,910,088.32
  4. Step 4: Simplify right side
    258,980,580.48x = 55,904,876,900,601,440
  5. Step 5: Solve for x
    x = 55,904,876,900,601,440/258,980,580.48
  6. Step 6: Final answer
    x = 215,865,130.88

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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.