Home / 282,973.02-390,513.15-155,658.30

Finding the Fourth Proportional to 282,973.02, 390,513.15 and 155,658.30

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Solution

The fourth proportional to 282,973.02, 390,513.15 and 155,658.30 is: 214,814.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,973.02 : 390,513.15 = 155,658.30 : x
  2. Step 2: Convert to fraction form
    282,973.02/390,513.15 = 155,658.30/x
  3. Step 3: Cross multiply
    282,973.02x = 390,513.15 × 155,658.30
  4. Step 4: Simplify right side
    282,973.02x = 60,786,613,056.65
  5. Step 5: Solve for x
    x = 60,786,613,056.65/282,973.02
  6. Step 6: Final answer
    x = 214,814.17

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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.