Home / 210,835,590.81-315,841,519.04-145,245,142.59

Finding the Fourth Proportional to 210,835,590.81, 315,841,519.04 and 145,245,142.59

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Solution

The fourth proportional to 210,835,590.81, 315,841,519.04 and 145,245,142.59 is: 217,583,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,835,590.81 : 315,841,519.04 = 145,245,142.59 : x
  2. Step 2: Convert to fraction form
    210,835,590.81/315,841,519.04 = 145,245,142.59/x
  3. Step 3: Cross multiply
    210,835,590.81x = 315,841,519.04 × 145,245,142.59
  4. Step 4: Simplify right side
    210,835,590.81x = 45,874,446,468,080,776
  5. Step 5: Solve for x
    x = 45,874,446,468,080,776/210,835,590.81
  6. Step 6: Final answer
    x = 217,583,977.60

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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.