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Finding the Fourth Proportional to 282,681.56, 390,191.45 and 180,980.93

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Solution

The fourth proportional to 282,681.56, 390,191.45 and 180,980.93 is: 249,811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,681.56 : 390,191.45 = 180,980.93 : x
  2. Step 2: Convert to fraction form
    282,681.56/390,191.45 = 180,980.93/x
  3. Step 3: Cross multiply
    282,681.56x = 390,191.45 × 180,980.93
  4. Step 4: Simplify right side
    282,681.56x = 70,617,211,569.62
  5. Step 5: Solve for x
    x = 70,617,211,569.62/282,681.56
  6. Step 6: Final answer
    x = 249,811.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.