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Finding the Fourth Proportional to 611,316.10, 917,014.65 and 162,030.70

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Solution

The fourth proportional to 611,316.10, 917,014.65 and 162,030.70 is: 243,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,316.10 : 917,014.65 = 162,030.70 : x
  2. Step 2: Convert to fraction form
    611,316.10/917,014.65 = 162,030.70/x
  3. Step 3: Cross multiply
    611,316.10x = 917,014.65 × 162,030.70
  4. Step 4: Simplify right side
    611,316.10x = 148,584,525,649.76
  5. Step 5: Solve for x
    x = 148,584,525,649.76/611,316.10
  6. Step 6: Final answer
    x = 243,056.78

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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.