Home / 290,304,031.80-435,456,047.70-256,291,807.80

Finding the Fourth Proportional to 290,304,031.80, 435,456,047.70 and 256,291,807.80

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Solution

The fourth proportional to 290,304,031.80, 435,456,047.70 and 256,291,807.80 is: 384,437,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,304,031.80 : 435,456,047.70 = 256,291,807.80 : x
  2. Step 2: Convert to fraction form
    290,304,031.80/435,456,047.70 = 256,291,807.80/x
  3. Step 3: Cross multiply
    290,304,031.80x = 435,456,047.70 × 256,291,807.80
  4. Step 4: Simplify right side
    290,304,031.80x = 111,603,817,682,476,032
  5. Step 5: Solve for x
    x = 111,603,817,682,476,032/290,304,031.80
  6. Step 6: Final answer
    x = 384,437,711.70

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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.