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Finding the Fourth Proportional to 285,038.80, 427,457.40 and 98,006.80

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Solution

The fourth proportional to 285,038.80, 427,457.40 and 98,006.80 is: 146,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,038.80 : 427,457.40 = 98,006.80 : x
  2. Step 2: Convert to fraction form
    285,038.80/427,457.40 = 98,006.80/x
  3. Step 3: Cross multiply
    285,038.80x = 427,457.40 × 98,006.80
  4. Step 4: Simplify right side
    285,038.80x = 41,893,731,910.32
  5. Step 5: Solve for x
    x = 41,893,731,910.32/285,038.80
  6. Step 6: Final answer
    x = 146,975.54

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1.5x scale

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.