Home / 277,890.21-383,438.02-155,384.80

Finding the Fourth Proportional to 277,890.21, 383,438.02 and 155,384.80

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Solution

The fourth proportional to 277,890.21, 383,438.02 and 155,384.80 is: 214,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,890.21 : 383,438.02 = 155,384.80 : x
  2. Step 2: Convert to fraction form
    277,890.21/383,438.02 = 155,384.80/x
  3. Step 3: Cross multiply
    277,890.21x = 383,438.02 × 155,384.80
  4. Step 4: Simplify right side
    277,890.21x = 59,580,440,050.10
  5. Step 5: Solve for x
    x = 59,580,440,050.10/277,890.21
  6. Step 6: Final answer
    x = 214,402.80

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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.