Home / 211,743,999.60-317,615,999.40-90,587,698.80

Finding the Fourth Proportional to 211,743,999.60, 317,615,999.40 and 90,587,698.80

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Solution

The fourth proportional to 211,743,999.60, 317,615,999.40 and 90,587,698.80 is: 135,881,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,743,999.60 : 317,615,999.40 = 90,587,698.80 : x
  2. Step 2: Convert to fraction form
    211,743,999.60/317,615,999.40 = 90,587,698.80/x
  3. Step 3: Cross multiply
    211,743,999.60x = 317,615,999.40 × 90,587,698.80
  4. Step 4: Simplify right side
    211,743,999.60x = 28,772,102,487,708,176
  5. Step 5: Solve for x
    x = 28,772,102,487,708,176/211,743,999.60
  6. Step 6: Final answer
    x = 135,881,548.20

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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.