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Finding the Fourth Proportional to 235,210.87, 351,038.80 and 212,510.51

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Solution

The fourth proportional to 235,210.87, 351,038.80 and 212,510.51 is: 317,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,210.87 : 351,038.80 = 212,510.51 : x
  2. Step 2: Convert to fraction form
    235,210.87/351,038.80 = 212,510.51/x
  3. Step 3: Cross multiply
    235,210.87x = 351,038.80 × 212,510.51
  4. Step 4: Simplify right side
    235,210.87x = 74,599,434,417.79
  5. Step 5: Solve for x
    x = 74,599,434,417.79/235,210.87
  6. Step 6: Final answer
    x = 317,159.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.