Home / 388,864.40-536,632.75-210,016.40

Finding the Fourth Proportional to 388,864.40, 536,632.75 and 210,016.40

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Solution

The fourth proportional to 388,864.40, 536,632.75 and 210,016.40 is: 289,822.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,864.40 : 536,632.75 = 210,016.40 : x
  2. Step 2: Convert to fraction form
    388,864.40/536,632.75 = 210,016.40/x
  3. Step 3: Cross multiply
    388,864.40x = 536,632.75 × 210,016.40
  4. Step 4: Simplify right side
    388,864.40x = 112,701,678,277.10
  5. Step 5: Solve for x
    x = 112,701,678,277.10/388,864.40
  6. Step 6: Final answer
    x = 289,822.57

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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.