Home / 256,405,001.20-384,607,501.80-74,658,108.40

Finding the Fourth Proportional to 256,405,001.20, 384,607,501.80 and 74,658,108.40

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Solution

The fourth proportional to 256,405,001.20, 384,607,501.80 and 74,658,108.40 is: 111,987,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,405,001.20 : 384,607,501.80 = 74,658,108.40 : x
  2. Step 2: Convert to fraction form
    256,405,001.20/384,607,501.80 = 74,658,108.40/x
  3. Step 3: Cross multiply
    256,405,001.20x = 384,607,501.80 × 74,658,108.40
  4. Step 4: Simplify right side
    256,405,001.20x = 28,714,068,560,837,600
  5. Step 5: Solve for x
    x = 28,714,068,560,837,600/256,405,001.20
  6. Step 6: Final answer
    x = 111,987,162.60

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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.