Home / 256,291,526.40-384,399,964.80-74,519,750.40

Finding the Fourth Proportional to 256,291,526.40, 384,399,964.80 and 74,519,750.40

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Solution

The fourth proportional to 256,291,526.40, 384,399,964.80 and 74,519,750.40 is: 111,768,772.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,291,526.40 : 384,399,964.80 = 74,519,750.40 : x
  2. Step 2: Convert to fraction form
    256,291,526.40/384,399,964.80 = 74,519,750.40/x
  3. Step 3: Cross multiply
    256,291,526.40x = 384,399,964.80 × 74,519,750.40
  4. Step 4: Simplify right side
    256,291,526.40x = 28,645,389,430,664,788
  5. Step 5: Solve for x
    x = 28,645,389,430,664,788/256,291,526.40
  6. Step 6: Final answer
    x = 111,768,772.98

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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.