Home / 286,511.04-429,618.24-128,603.52

Finding the Fourth Proportional to 286,511.04, 429,618.24 and 128,603.52

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Solution

The fourth proportional to 286,511.04, 429,618.24 and 128,603.52 is: 192,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,511.04 : 429,618.24 = 128,603.52 : x
  2. Step 2: Convert to fraction form
    286,511.04/429,618.24 = 128,603.52/x
  3. Step 3: Cross multiply
    286,511.04x = 429,618.24 × 128,603.52
  4. Step 4: Simplify right side
    286,511.04x = 55,250,417,920.20
  5. Step 5: Solve for x
    x = 55,250,417,920.20/286,511.04
  6. Step 6: Final answer
    x = 192,838.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.