Home / 285,205,781.40-427,837,673.72-98,435,416.80

Finding the Fourth Proportional to 285,205,781.40, 427,837,673.72 and 98,435,416.80

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Solution

The fourth proportional to 285,205,781.40, 427,837,673.72 and 98,435,416.80 is: 147,663,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,205,781.40 : 427,837,673.72 = 98,435,416.80 : x
  2. Step 2: Convert to fraction form
    285,205,781.40/427,837,673.72 = 98,435,416.80/x
  3. Step 3: Cross multiply
    285,205,781.40x = 427,837,673.72 × 98,435,416.80
  4. Step 4: Simplify right side
    285,205,781.40x = 42,114,379,735,370,608
  5. Step 5: Solve for x
    x = 42,114,379,735,370,608/285,205,781.40
  6. Step 6: Final answer
    x = 147,663,134.77

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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.