Home / 289,688.55-434,533.64-90,038.13

Finding the Fourth Proportional to 289,688.55, 434,533.64 and 90,038.13

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Solution

The fourth proportional to 289,688.55, 434,533.64 and 90,038.13 is: 135,057.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,688.55 : 434,533.64 = 90,038.13 : x
  2. Step 2: Convert to fraction form
    289,688.55/434,533.64 = 90,038.13/x
  3. Step 3: Cross multiply
    289,688.55x = 434,533.64 × 90,038.13
  4. Step 4: Simplify right side
    289,688.55x = 39,124,595,917.50
  5. Step 5: Solve for x
    x = 39,124,595,917.50/289,688.55
  6. Step 6: Final answer
    x = 135,057.45

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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.