Home / 508,355,999.80-762,533,999.70-139,890,239.80

Finding the Fourth Proportional to 508,355,999.80, 762,533,999.70 and 139,890,239.80

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Solution

The fourth proportional to 508,355,999.80, 762,533,999.70 and 139,890,239.80 is: 209,835,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,355,999.80 : 762,533,999.70 = 139,890,239.80 : x
  2. Step 2: Convert to fraction form
    508,355,999.80/762,533,999.70 = 139,890,239.80/x
  3. Step 3: Cross multiply
    508,355,999.80x = 762,533,999.70 × 139,890,239.80
  4. Step 4: Simplify right side
    508,355,999.80x = 106,671,064,073,686,144
  5. Step 5: Solve for x
    x = 106,671,064,073,686,144/508,355,999.80
  6. Step 6: Final answer
    x = 209,835,359.70

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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.