Home / 393,356,985.60-590,035,478.40-147,713,145.60

Finding the Fourth Proportional to 393,356,985.60, 590,035,478.40 and 147,713,145.60

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Solution

The fourth proportional to 393,356,985.60, 590,035,478.40 and 147,713,145.60 is: 221,569,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,356,985.60 : 590,035,478.40 = 147,713,145.60 : x
  2. Step 2: Convert to fraction form
    393,356,985.60/590,035,478.40 = 147,713,145.60/x
  3. Step 3: Cross multiply
    393,356,985.60x = 590,035,478.40 × 147,713,145.60
  4. Step 4: Simplify right side
    393,356,985.60x = 87,155,996,530,064,848
  5. Step 5: Solve for x
    x = 87,155,996,530,064,848/393,356,985.60
  6. Step 6: Final answer
    x = 221,569,718.40

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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.