Home / 288,919.17-432,985.10-139,148.55

Finding the Fourth Proportional to 288,919.17, 432,985.10 and 139,148.55

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Solution

The fourth proportional to 288,919.17, 432,985.10 and 139,148.55 is: 208,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,919.17 : 432,985.10 = 139,148.55 : x
  2. Step 2: Convert to fraction form
    288,919.17/432,985.10 = 139,148.55/x
  3. Step 3: Cross multiply
    288,919.17x = 432,985.10 × 139,148.55
  4. Step 4: Simplify right side
    288,919.17x = 60,249,248,140.86
  5. Step 5: Solve for x
    x = 60,249,248,140.86/288,919.17
  6. Step 6: Final answer
    x = 208,533.23

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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.