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Finding the Fourth Proportional to 610,999.60, 916,280.68 and 211,533.10

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Solution

The fourth proportional to 610,999.60, 916,280.68 and 211,533.10 is: 317,223.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,999.60 : 916,280.68 = 211,533.10 : x
  2. Step 2: Convert to fraction form
    610,999.60/916,280.68 = 211,533.10/x
  3. Step 3: Cross multiply
    610,999.60x = 916,280.68 × 211,533.10
  4. Step 4: Simplify right side
    610,999.60x = 193,823,692,710.51
  5. Step 5: Solve for x
    x = 193,823,692,710.51/610,999.60
  6. Step 6: Final answer
    x = 317,223.93

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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.