Home / 420,700,145.60-631,050,218.40-194,207,729.60

Finding the Fourth Proportional to 420,700,145.60, 631,050,218.40 and 194,207,729.60

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Solution

The fourth proportional to 420,700,145.60, 631,050,218.40 and 194,207,729.60 is: 291,311,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,700,145.60 : 631,050,218.40 = 194,207,729.60 : x
  2. Step 2: Convert to fraction form
    420,700,145.60/631,050,218.40 = 194,207,729.60/x
  3. Step 3: Cross multiply
    420,700,145.60x = 631,050,218.40 × 194,207,729.60
  4. Step 4: Simplify right side
    420,700,145.60x = 122,554,830,179,048,144
  5. Step 5: Solve for x
    x = 122,554,830,179,048,144/420,700,145.60
  6. Step 6: Final answer
    x = 291,311,594.40

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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.