Home / 256,230,216.40-384,307,999.80-74,458,440.40

Finding the Fourth Proportional to 256,230,216.40, 384,307,999.80 and 74,458,440.40

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Solution

The fourth proportional to 256,230,216.40, 384,307,999.80 and 74,458,440.40 is: 111,676,814.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,230,216.40 : 384,307,999.80 = 74,458,440.40 : x
  2. Step 2: Convert to fraction form
    256,230,216.40/384,307,999.80 = 74,458,440.40/x
  3. Step 3: Cross multiply
    256,230,216.40x = 384,307,999.80 × 74,458,440.40
  4. Step 4: Simplify right side
    256,230,216.40x = 28,614,974,298,351,516
  5. Step 5: Solve for x
    x = 28,614,974,298,351,516/256,230,216.40
  6. Step 6: Final answer
    x = 111,676,814.31

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1.5x scale

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.