Home / 282,971.28-390,492.08-155,646.80

Finding the Fourth Proportional to 282,971.28, 390,492.08 and 155,646.80

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Solution

The fourth proportional to 282,971.28, 390,492.08 and 155,646.80 is: 214,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,971.28 : 390,492.08 = 155,646.80 : x
  2. Step 2: Convert to fraction form
    282,971.28/390,492.08 = 155,646.80/x
  3. Step 3: Cross multiply
    282,971.28x = 390,492.08 × 155,646.80
  4. Step 4: Simplify right side
    282,971.28x = 60,778,842,677.34
  5. Step 5: Solve for x
    x = 60,778,842,677.34/282,971.28
  6. Step 6: Final answer
    x = 214,788.03

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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.