Home / 282,804.79-390,271.62-155,488.45

Finding the Fourth Proportional to 282,804.79, 390,271.62 and 155,488.45

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Solution

The fourth proportional to 282,804.79, 390,271.62 and 155,488.45 is: 214,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,804.79 : 390,271.62 = 155,488.45 : x
  2. Step 2: Convert to fraction form
    282,804.79/390,271.62 = 155,488.45/x
  3. Step 3: Cross multiply
    282,804.79x = 390,271.62 × 155,488.45
  4. Step 4: Simplify right side
    282,804.79x = 60,682,729,272.79
  5. Step 5: Solve for x
    x = 60,682,729,272.79/282,804.79
  6. Step 6: Final answer
    x = 214,574.62

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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.