Home / 258,048,009.60-387,072,014.40-149,208,892.80

Finding the Fourth Proportional to 258,048,009.60, 387,072,014.40 and 149,208,892.80

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Solution

The fourth proportional to 258,048,009.60, 387,072,014.40 and 149,208,892.80 is: 223,813,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,048,009.60 : 387,072,014.40 = 149,208,892.80 : x
  2. Step 2: Convert to fraction form
    258,048,009.60/387,072,014.40 = 149,208,892.80/x
  3. Step 3: Cross multiply
    258,048,009.60x = 387,072,014.40 × 149,208,892.80
  4. Step 4: Simplify right side
    258,048,009.60x = 57,754,586,702,489,656
  5. Step 5: Solve for x
    x = 57,754,586,702,489,656/258,048,009.60
  6. Step 6: Final answer
    x = 223,813,339.20

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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.