Home / 210,346,212.90-315,535,606.01-70,287,154.42

Finding the Fourth Proportional to 210,346,212.90, 315,535,606.01 and 70,287,154.42

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Solution

The fourth proportional to 210,346,212.90, 315,535,606.01 and 70,287,154.42 is: 105,436,173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,346,212.90 : 315,535,606.01 = 70,287,154.42 : x
  2. Step 2: Convert to fraction form
    210,346,212.90/315,535,606.01 = 70,287,154.42/x
  3. Step 3: Cross multiply
    210,346,212.90x = 315,535,606.01 × 70,287,154.42
  4. Step 4: Simplify right side
    210,346,212.90x = 22,178,099,865,235,056
  5. Step 5: Solve for x
    x = 22,178,099,865,235,056/210,346,212.90
  6. Step 6: Final answer
    x = 105,436,173.82

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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.