Home / 318,047,312.80-477,075,375.60-209,566,928.80

Finding the Fourth Proportional to 318,047,312.80, 477,075,375.60 and 209,566,928.80

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Solution

The fourth proportional to 318,047,312.80, 477,075,375.60 and 209,566,928.80 is: 314,353,296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,047,312.80 : 477,075,375.60 = 209,566,928.80 : x
  2. Step 2: Convert to fraction form
    318,047,312.80/477,075,375.60 = 209,566,928.80/x
  3. Step 3: Cross multiply
    318,047,312.80x = 477,075,375.60 × 209,566,928.80
  4. Step 4: Simplify right side
    318,047,312.80x = 99,979,221,270,598,464
  5. Step 5: Solve for x
    x = 99,979,221,270,598,464/318,047,312.80
  6. Step 6: Final answer
    x = 314,353,296.65

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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.