Home / 661,795.50-992,599.52-212,457.20

Finding the Fourth Proportional to 661,795.50, 992,599.52 and 212,457.20

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Solution

The fourth proportional to 661,795.50, 992,599.52 and 212,457.20 is: 318,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,795.50 : 992,599.52 = 212,457.20 : x
  2. Step 2: Convert to fraction form
    661,795.50/992,599.52 = 212,457.20/x
  3. Step 3: Cross multiply
    661,795.50x = 992,599.52 × 212,457.20
  4. Step 4: Simplify right side
    661,795.50x = 210,884,908,715.26
  5. Step 5: Solve for x
    x = 210,884,908,715.26/661,795.50
  6. Step 6: Final answer
    x = 318,655.70

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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.