Home / 384,890,279.19-531,152,532.38-208,678,615.35

Finding the Fourth Proportional to 384,890,279.19, 531,152,532.38 and 208,678,615.35

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Solution

The fourth proportional to 384,890,279.19, 531,152,532.38 and 208,678,615.35 is: 287,978,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,890,279.19 : 531,152,532.38 = 208,678,615.35 : x
  2. Step 2: Convert to fraction form
    384,890,279.19/531,152,532.38 = 208,678,615.35/x
  3. Step 3: Cross multiply
    384,890,279.19x = 531,152,532.38 × 208,678,615.35
  4. Step 4: Simplify right side
    384,890,279.19x = 110,840,174,996,704,432
  5. Step 5: Solve for x
    x = 110,840,174,996,704,432/384,890,279.19
  6. Step 6: Final answer
    x = 287,978,629.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.