Home / 282,779.39-390,243.02-155,458.19

Finding the Fourth Proportional to 282,779.39, 390,243.02 and 155,458.19

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Solution

The fourth proportional to 282,779.39, 390,243.02 and 155,458.19 is: 214,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,779.39 : 390,243.02 = 155,458.19 : x
  2. Step 2: Convert to fraction form
    282,779.39/390,243.02 = 155,458.19/x
  3. Step 3: Cross multiply
    282,779.39x = 390,243.02 × 155,458.19
  4. Step 4: Simplify right side
    282,779.39x = 60,666,473,747.65
  5. Step 5: Solve for x
    x = 60,666,473,747.65/282,779.39
  6. Step 6: Final answer
    x = 214,536.40

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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.