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Finding the Fourth Proportional to 612,303.36, 918,457.98 and 185,842.89

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Solution

The fourth proportional to 612,303.36, 918,457.98 and 185,842.89 is: 278,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,303.36 : 918,457.98 = 185,842.89 : x
  2. Step 2: Convert to fraction form
    612,303.36/918,457.98 = 185,842.89/x
  3. Step 3: Cross multiply
    612,303.36x = 918,457.98 × 185,842.89
  4. Step 4: Simplify right side
    612,303.36x = 170,688,885,346.76
  5. Step 5: Solve for x
    x = 170,688,885,346.76/612,303.36
  6. Step 6: Final answer
    x = 278,765.23

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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.