Home / 290,012,814.72-435,007,424.57-71,657,658.14

Finding the Fourth Proportional to 290,012,814.72, 435,007,424.57 and 71,657,658.14

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Solution

The fourth proportional to 290,012,814.72, 435,007,424.57 and 71,657,658.14 is: 107,483,572.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,012,814.72 : 435,007,424.57 = 71,657,658.14 : x
  2. Step 2: Convert to fraction form
    290,012,814.72/435,007,424.57 = 71,657,658.14/x
  3. Step 3: Cross multiply
    290,012,814.72x = 435,007,424.57 × 71,657,658.14
  4. Step 4: Simplify right side
    290,012,814.72x = 31,171,613,315,665,572
  5. Step 5: Solve for x
    x = 31,171,613,315,665,572/290,012,814.72
  6. Step 6: Final answer
    x = 107,483,572.22

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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.