Home / 420,074,115.40-630,111,173.10-177,705,526.60

Finding the Fourth Proportional to 420,074,115.40, 630,111,173.10 and 177,705,526.60

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Solution

The fourth proportional to 420,074,115.40, 630,111,173.10 and 177,705,526.60 is: 266,558,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,074,115.40 : 630,111,173.10 = 177,705,526.60 : x
  2. Step 2: Convert to fraction form
    420,074,115.40/630,111,173.10 = 177,705,526.60/x
  3. Step 3: Cross multiply
    420,074,115.40x = 630,111,173.10 × 177,705,526.60
  4. Step 4: Simplify right side
    420,074,115.40x = 111,974,237,832,279,248
  5. Step 5: Solve for x
    x = 111,974,237,832,279,248/420,074,115.40
  6. Step 6: Final answer
    x = 266,558,289.90

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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.